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Method of transferring micro-light emitting diode for LED display

Pending Publication Date: 2021-05-06
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes methods for improving the transfer of micro LEDs in LED displays. These methods increase the efficiency of transferring the micro LEDs and allow for quick and accurate transfer of large-region pixel arrays. Overall, the patent aims to enhance the production and manufacturing of LED displays.

Problems solved by technology

In the past, liquid crystal displays (LCD) have been used for flat panel displays, however, as use of organic light emitting diodes (OLED) that do not use a liquid crystal has become widespread, supply of LCDs has decreased significantly.

Method used

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  • Method of transferring micro-light emitting diode for LED display
  • Method of transferring micro-light emitting diode for LED display
  • Method of transferring micro-light emitting diode for LED display

Examples

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Embodiment Construction

[0068]Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. In this regard, embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, embodiments are merely described below, by referring to the figures, to explain aspects. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.

[0069]Hereinafter, with reference to the accompanying drawings, a micro LED transfer method for an LED display will be described in detail. The thickness of a layer or regions illustrated in the drawings may be exaggerated for convenience of explanation and clarity. Embodiments described be...

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Abstract

A method of transferring a micro light emitting diode (LED) to a pixel array panel includes transferring the micro LED by spraying using an inkjet method, wherein the micro LED comprises an active layer comprising a first portion emitting light in a first direction and a second portion emitting the light in a second direction different from the first direction.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based on and claims the benefit of U.S. Provisional Patent Application No. 62 / 930,880, filed on Nov. 5, 2019, and is also based on and claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2020-0042411, filed on Apr. 7, 2020, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties.BACKGROUND1. Field[0002]The disclosure relates to display manufacturing, and more particularly, to methods of transferring a micro light emitting diode (LED) used as a pixel light source in a process of manufacturing an LED display.2. Description of Related Art[0003]In the past, liquid crystal displays (LCD) have been used for flat panel displays, however, as use of organic light emitting diodes (OLED) that do not use a liquid crystal has become widespread, supply of LCDs has decreased significantly. Recently, a light emitting diode (LED) display that di...

Claims

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Application Information

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IPC IPC(8): H01L25/075H01L23/00
CPCH01L25/0753H01L24/08H01L24/80H01L2224/8014H01L2224/08225H01L2924/12041H01L2224/80986H01L33/0095H01L2933/0041H01L24/95H01L2224/24137H01L2224/16225H01L2224/95102H01L2224/9512H01L24/24H01L24/82H01L2224/95136H01L2924/10156H01L2224/245H01L2924/0549H01L2924/0543H01L2924/01049H01L2924/0544H01L2924/0105H01L2924/00014
Inventor HWANG, KYUNGWOOKHWANG, JUNSIKHWANG, SUNGWOO
Owner SAMSUNG ELECTRONICS CO LTD
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